DsRed Express
DsRed Express (Ex-Max 554 nm/Em-Max 586 nm)
DsRed Express T1 is a tetrameric fluorescent protein first isolated from sea anemone of the Discosoma genus. It has an excitation peak at 554 nm and an emisison peak at 586 nm.
Excitation & emission spectra
Key facts
- Excitation maximum
- 554 nm
- Emission maximum
- 586 nm
- Optimal laser line
- 561
- Optimal filter
- 585/40
- Extinction coefficient
- 30100
- Quantum yield
- 0.42
- Molecular weight
- 25700
DsRed Express has an excitation maximum at 554 nm and an emission maximum at 586 nm, a Stokes shift of 32 nm. Its extinction coefficient is 30100 M⁻¹cm⁻¹. It is optimally excited by the 561 laser line.
Frequently asked questions
- What is DsRed Express?
- DsRed Express T1 is a tetrameric fluorescent protein first isolated from sea anemone of the Discosoma genus. It has an excitation peak at 554 nm and an emisison peak at 586 nm.
- What laser excites DsRed Express?
- DsRed Express is optimally excited by the 561 laser line. Its excitation maximum is 554 nm.
- What filter should I use to detect DsRed Express?
- A 585/40 filter captures the peak of the DsRed Express emission near 586 nm with minimal spillover.